Purchase requirement for parts

Use the Purchase requirement for parts form to enter, modify, authorize, or delete purchase requirements for parts. Authorized purchase requirements for parts can be converted into purchase offers, purchase orders, or internal production orders.

Create purchase requirements

There are several ways to create purchase requirements in Isah:

• Purchase requirements can be added manually by clicking
• Purchase requirements can be calculated using the Create purchase requirements process
• You can calculate purchase requirements as a result of an MRP calculation.

The following processes are available for automatically calculating purchase requirements for parts:

• Create purchase requirements for sales file
• Create purchase requirements for parts to order
• Create purchase requirements for stock parts
• Run MRP.

The purchase requirement created will be added to the Purchase requirement for parts form. This is also where you can manually add purchase requirements by clicking . You can manually add one or more purchase requirement lines:

• If you do not want to create a purchase requirement, but do want to create a purchase offer, purchase order, or production order
• If you want to create a purchase offer, purchase order, or internal production order for a part not listed on the purchase requirement that has been created

Authorize purchase requirements

A purchase requirement for parts can be authorized only if:

• The receipt date entered is not in the past.
• A supplier has been entered.
• The value of the Quantity field in the Dimensions section on the General tab is not '0'.

The Authorization field allows you to authorize the purchase requirement. As long as the purchase requirement line has not been processed, you can undo the authorization and make changes. Only authorized purchase requirement lines can be converted into a purchase offer, purchase order, or internal production order.

Note: Do not authorize a line until you are certain it is correct.A purchase offer, purchase order, or internal production order will be created from authorized purchase requirement lines as soon as the relevant process is run.

Tip: Before placing a purchase order, you can ask various suppliers for a purchase offer. The value of the Type field on the General tab of the purchase requirement must in this case be 'Purchase offer'. If that is not the case, choose Modify type from the Edit menu. Specify 'Purchase offer' as the new type, and click OK. Authorize the purchase requirement. If you now run the Create purchase offers and orders for parts process, a purchase offer will be created.